Pass Size and Text to a QGraphicsItem

I have subclassed QGraphicsItem to draw a roundedRect with two lines of text in.

I would like to pass the size and the text to the item so the item can be used dynamically for a number of different items.

the code i have is below:

Code:

class SimpleItem : public QGraphicsItem
{
public:
 
    //SimpleItem(QString Title);
 
    QRectF boundingRect() const
    {
        qreal penWidth = 1;
        return QRectF(-10 - penWidth / 2, -10 - penWidth / 2,
                      20 + penWidth, 20 + penWidth);
    }
 
    void paint(QPainter *painter, const QStyleOptionGraphicsItem *option,
               QWidget *widget)
    {
        painter->drawRoundedRect(-10, -10, 100, 50, 5, 5);
        //painter->brush(Qt::blue);
        //QVariant title = title;
        painter->drawText(10, 10, "Title");
        painter->drawText(10, 30, "Subtitle");
    }
};